Steven Ryder - Jun 5, 2025 Form 4 Insider Report for MBX Biosciences, Inc. (MBX)

Role
Director
Signature
/s/ Richard Bartram, attorney-in-fact
Stock symbol
MBX
Transactions as of
Jun 5, 2025
Transactions value $
$0
Form type
4
Date filed
6/6/2025, 08:03 AM
Previous filing
Feb 19, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ryder Steven Director C/O MBX BIOSCIENCES, INC., 11711 N. MERIDIAN STREET, SUITE 300, CARMEL /s/ Richard Bartram, attorney-in-fact 2025-06-06 0001872868

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MBX Stock option (right to buy) Award $0 +16K $0.00 16K Jun 5, 2025 Common Stock 16K $11.86 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The grant will vest in full on the earlier of the one-year anniversary of the grant date or on the date of our next annual meeting of stockholders, subject to the non-employee director's continued services to the Company.